Safe and environment-friendly molten salt furnace tail gas heat exchanger

Abstract

The utility model relates to the technical field of molten salt furnaces, and discloses a safe and environment-friendly molten salt furnace tail gas heat exchanger which comprises a heat exchanger body, the left end of the heat exchanger body is communicated with a tail gas inlet pipe, a heat exchange pipe is arranged in the heat exchanger body, and one end of the heat exchange pipe is fixedly connected with a water inlet pipe. The end, away from the water inlet pipe, of the heat exchange pipe is fixedly connected with a water outlet pipe, the right end of the heat exchanger communicates with a connecting pipe, the end, away from the heat exchanger, of the connecting pipe communicates with a filter box, and a spraying assembly is arranged at the upper end of the filter box. Tail gas is preliminarily filtered through the first filter screen, then the water pump is started, the water pump pumps cooling water in the water storage tank through the water pumping pipe and then conveys the cooling water to the interior of the atomization spraying head through the water conveying pipe, the tail gas is sprayed and filtered through the atomization spraying head, harmful substances and particulate matter in the tail gas are filtered, and the tail gas is purified. And the filtered and washed tail gas is discharged into the atmosphere through the exhaust pipe, so that the pollution to the environment is reduced.

Description

Technical Field

[0001] This utility model relates to the field of molten salt furnace technology, and in particular to a safe and environmentally friendly molten salt furnace exhaust gas heat exchanger. Background Technology

[0002] Molten salt furnaces transfer heat to molten salt by burning fuel (such as coal, oil, or gas) or using electric heating elements, raising its temperature. The molten salt, in a liquid state at high temperatures, circulates through the system via a circulating pump, transferring heat to the equipment or materials requiring heating before returning to the furnace for reheating.

[0003] Molten salt furnaces generate a large amount of high-temperature exhaust gas during operation. This exhaust gas contains a large number of harmful substances and particulate matter, such as sulfur dioxide, nitrogen oxides, and heavy metal particles. If these harmful substances are directly discharged into the atmosphere without treatment, they will cause serious environmental pollution and affect people's health. Moreover, if the high-temperature exhaust gas generated by the molten salt furnace is directly discharged into the atmosphere, it will lead to a large amount of heat energy waste. Therefore, we propose a safe and environmentally friendly molten salt furnace exhaust gas heat exchanger. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a safe and environmentally friendly molten salt furnace exhaust gas heat exchanger.

[0005] This utility model is achieved using the following technical solution: a safe and environmentally friendly molten salt furnace tail gas heat exchanger, comprising a heat exchanger, a tail gas inlet pipe connected to the left end of the heat exchanger, a heat exchange tube installed inside the heat exchanger, a water inlet pipe fixedly connected to one end of the heat exchange tube, a water outlet pipe fixedly connected to the end of the heat exchange tube away from the water inlet pipe, a connecting pipe connected to the right end of the heat exchanger, a filter box connected to the end of the connecting pipe away from the heat exchanger, a spray assembly installed at the upper end of the filter box, a water storage tank installed at the rear end of the filter box, and an exhaust pipe connected to the right end of the filter box.

[0006] The spray assembly includes a water pump, with a water delivery pipe connected to the front end of the water pump. One end of the water delivery pipe passes through the filter box and is connected to an atomizing spray head. A water pumping pipe is connected to the rear end of the water pump.

[0007] The above technical solution involves starting a water pump, which draws cooling water from the water storage tank through a pumping pipe, and then delivers it to the atomizing spray head through a water supply pipe. The atomizing spray head then sprays and filters the exhaust gas, removing harmful substances and particulate matter. The filtered and washed exhaust gas is then discharged into the atmosphere through an exhaust pipe, reducing environmental pollution.

[0008] As a further improvement to the above solution, the bottom of the water pump is fixedly connected to the top of the filter box, and the top of the atomizing spray head is fixedly connected to the top of the inner wall of the filter box.

[0009] The above technical solution uses atomized water spray heads to spray the exhaust gas, ensuring coverage.

[0010] As a further improvement to the above solution, the end of the pumping pipe away from the water pump extends into the interior of the water storage tank.

[0011] The above technical solution uses a water storage tank to store water, which facilitates its subsequent use in spraying.

[0012] As a further improvement to the above solution, one end of the water inlet pipe extends to the outside of the heat exchanger, and one end of the water outlet pipe extends to the outside of the heat exchanger.

[0013] The above technical solution connects the inlet pipe to the external pipe and the outlet pipe to the external heating pipe, allowing the hot water after heat exchange to enter the heating pipe.

[0014] As a further improvement to the above solution, a drain pipe is connected to the rear end of the filter box, and the end of the drain pipe away from the filter box is connected to a water storage tank.

[0015] The above technical solution allows the water inside the filter box to return to the storage tank via a drain pipe, facilitating subsequent recycling and reducing resource waste.

[0016] As a further improvement to the above solution, a first filter screen is fixedly connected to the inner wall of the filter box, and the first filter screen is located at the upper end of the connecting pipe.

[0017] The above technical solution uses a first filter screen to perform preliminary filtration of the exhaust gas entering the filter box, filtering out larger particles.

[0018] As a further improvement to the above solution, a second filter screen is fixedly connected to the inner wall of the filter box, and the second filter screen is located at the lower end of the first filter screen.

[0019] The above technical solution filters the water after spraying through a second filter screen, allowing the water source to continue to be used.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] This invention incorporates a first filter screen and a spray assembly. Specifically, the first filter screen performs preliminary filtration of the exhaust gas. Then, a water pump is activated, drawing cooling water from the storage tank through a pumping pipe and delivering it to the atomizing spray head through a water supply pipe. The atomizing spray head then sprays and filters the exhaust gas, removing harmful substances and particulate matter. The filtered and washed exhaust gas is then discharged into the atmosphere through an exhaust pipe, reducing environmental pollution.

[0022] This invention incorporates a second filter screen, specifically filtering the sprayed water before draining it into a water storage tank. This facilitates water resource recycling and reduces operating costs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic cross-sectional view of the present invention.

[0025] Figure 3 This is a schematic diagram of the heat exchange tube structure of this utility model;

[0026] Figure 4 This is a side view of the structure of this utility model;

[0027] Figure 5 This is a top view of the structure of this utility model.

[0028] Explanation of key symbols:

[0029] 1. Heat exchanger; 2. Exhaust gas inlet pipe; 3. Heat exchange tube; 4. Water inlet pipe; 5. Water outlet pipe; 6. Connecting pipe; 7. Filter box; 8. Spray assembly; 801. Water pump; 802. Water delivery pipe; 803. Atomizing spray head; 804. Water pumping pipe; 9. Water storage tank; 10. Drain pipe; 11. Exhaust pipe; 12. First filter screen; 13. Second filter screen. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] Example:

[0032] Please combine Figure 1-5 This embodiment of a safe and environmentally friendly molten salt furnace exhaust gas heat exchanger includes a heat exchanger 1. The left end of the heat exchanger 1 is connected to an exhaust gas inlet pipe 2. The heat exchanger 1 is equipped with a heat exchange tube 3. One end of the heat exchange tube 3 is fixedly connected to a water inlet pipe 4. The end of the heat exchange tube 3 away from the water inlet pipe 4 is fixedly connected to a water outlet pipe 5. The right end of the heat exchanger 1 is connected to a connecting pipe 6. The end of the connecting pipe 6 away from the heat exchanger 1 is connected to a filter box 7. The upper end of the filter box 7 is equipped with a spray assembly 8. The rear end of the filter box 7 is equipped with a water storage tank 9. The right end of the filter box 7 is connected to an exhaust pipe 11.

[0033] The spray assembly 8 includes a water pump 801. A water supply pipe 802 is connected to the front end of the water pump 801. One end of the water supply pipe 802 passes through the filter box 7 and is connected to an atomizing spray head 803. A water suction pipe 804 is connected to the rear end of the water pump 801. The exhaust gas from the molten salt furnace enters the heat exchanger 1 through the exhaust gas inlet pipe 2. Water is injected into the inlet pipe 4 and enters the heat exchange tube 3. The heat from the molten salt furnace exhaust gas heats the water inside the heat exchange tube 3, and then the water is discharged through the outlet pipe 5. After heat exchange, the exhaust gas enters the filter box 7 through the connecting pipe 6. Then, the water pump 801 is started. The water pump 801 draws cooling water from the water storage tank 9 through the water pumping pipe 804, and then delivers it to the atomizing spray head 803 through the water delivery pipe 802. The atomizing spray head 803 sprays and filters the exhaust gas, filtering out harmful substances and particulate matter in the exhaust gas. After filtration and washing, the exhaust gas is discharged into the atmosphere through the exhaust pipe 11, reducing environmental pollution.

[0034] The bottom of the water pump 801 is fixedly connected to the top of the filter box 7, and the top of the atomizing spray head 803 is fixedly connected to the top of the inner wall of the filter box 7.

[0035] The end of the water pump 804 away from the water pump 801 extends into the interior of the water storage tank 9.

[0036] One end of the inlet pipe 4 extends to the outside of the heat exchanger 1, and one end of the outlet pipe 5 extends to the outside of the heat exchanger 1.

[0037] The rear end of the filter box 7 is connected to a drain pipe 10, and the end of the drain pipe 10 away from the filter box 7 is connected to the water storage tank 9.

[0038] The inner wall of the filter box 7 is fixedly connected to a first filter screen 12, which is located at the upper end of the connecting pipe 6. The exhaust gas is initially filtered through the first filter screen 12 to filter out larger particles.

[0039] A second filter screen 13 is fixedly connected to the inner wall of the filter box 7. The second filter screen 13 is located at the lower end of the first filter screen 12. The water source after spraying is filtered through the second filter screen 13, and then the filtered water source flows into the interior of the water storage tank 9 through the drain pipe 10, which facilitates the recycling of water resources and reduces the cost of use.

[0040] The implementation principle of a safe and environmentally friendly molten salt furnace exhaust gas heat exchanger in this application embodiment is as follows: During use, the exhaust gas from the molten salt furnace enters the heat exchanger 1 through the exhaust gas inlet pipe 2. Water is injected into the water inlet pipe 4 and enters the heat exchange tube 3. The heat from the molten salt furnace exhaust gas heats the water inside the heat exchange tube 3, and then it is discharged out through the water outlet pipe 5. After heat exchange, the exhaust gas enters the filter box 7 through the connecting pipe 6. The exhaust gas undergoes preliminary filtration through the first filter screen 12. Then, the water pump 801 is started, and the water pump 801 pumps water... Pipe 804 draws cooling water from inside the water storage tank 9 and then delivers it to the interior of the atomizing spray head 803 through the water supply pipe 802. The atomizing spray head 803 sprays and filters the exhaust gas, removing harmful substances and particulate matter. The filtered and washed exhaust gas is then discharged into the atmosphere through the exhaust pipe 11, reducing environmental pollution. The sprayed water is filtered through the second filter screen 13 and then flows into the water storage tank 9 through the drain pipe 10, facilitating water resource recycling and reducing operating costs.

[0041] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A safe and environmentally friendly molten salt furnace exhaust gas heat exchanger, characterized in that, The device includes a heat exchanger (1), with a tail gas inlet pipe (2) connected to the left end of the heat exchanger (1), a heat exchange tube (3) inside the heat exchanger (1), a water inlet pipe (4) fixedly connected to one end of the heat exchange tube (3), a water outlet pipe (5) fixedly connected to the end of the heat exchange tube (3) away from the water inlet pipe (4), a connecting pipe (6) connected to the right end of the heat exchanger (1), a filter box (7) connected to the end of the connecting pipe (6) away from the heat exchanger (1), a spray assembly (8) provided at the upper end of the filter box (7), a water storage tank (9) provided at the rear end of the filter box (7), and an exhaust pipe (11) connected to the right end of the filter box (7). The spray assembly (8) includes a water pump (801), the front end of which is connected to a water delivery pipe (802), one end of which passes through a filter box (7) and is connected to an atomizing spray head (803), and the rear end of the water pump (801) is connected to a water suction pipe (804).

2. The safe and environmentally friendly molten salt furnace tail gas heat exchanger as described in claim 1, characterized in that: The bottom of the water pump (801) is fixedly connected to the top of the filter box (7), and the top of the atomizing spray head (803) is fixedly connected to the top of the inner wall of the filter box (7).

3. The safe and environmentally friendly molten salt furnace tail gas heat exchanger as described in claim 1, characterized in that: The end of the pumping pipe (804) away from the water pump (801) extends into the interior of the water storage tank (9).

4. The safe and environmentally friendly molten salt furnace tail gas heat exchanger as described in claim 1, characterized in that: One end of the inlet pipe (4) extends to the outside of the heat exchanger (1), and one end of the outlet pipe (5) extends to the outside of the heat exchanger (1).

5. The safe and environmentally friendly molten salt furnace tail gas heat exchanger as described in claim 1, characterized in that: The rear end of the filter box (7) is connected to a drain pipe (10), and the end of the drain pipe (10) away from the filter box (7) is connected to a water storage tank (9).

6. The safe and environmentally friendly molten salt furnace tail gas heat exchanger as described in claim 5, characterized in that: The inner wall of the filter box (7) is fixedly connected to a first filter screen (12), which is located at the upper end of the connecting pipe (6).

7. A safe and environmentally friendly molten salt furnace tail gas heat exchanger as described in claim 6, characterized in that: The inner wall of the filter box (7) is fixedly connected to a second filter screen (13), which is located at the lower end of the first filter screen (12).

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